Nucleon structure in the covariant parton model

I will present a generalization of the covariant parton model that describes the quark correlators in a systematic way. This new version of the model allows for the first time to evaluate all T-even twist-3 transverse momentum dependent parton distribution functions (TMDs), and reproduces the T-even leading-twist TMDs from the original version. The fully unintegrated quark correlator is also evaluated in this approach, which allows us to understand the model-specific relations between different TMDs. The consistency of the approach is discussed and numerical results with comparisons to available TMD parametrizations are provided.